Chronic Wasting Disease hos vilt

Veterinærinstituttet overvåker skrantesjuke (chronic wasting disease – CWD) i de norske hjortedyrbestandene.

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Overvåkingsprogrammet inkluderer prøver fra elg (Alcec alces), hjort (Cervus elaphus), rådyr (Capreolus capreolus), rein (Rangifer tarandus) og dåhjort (Dama dama).

Formålet med overvåkningsprogrammet er å dokumentere status av CWD hos hjortedyr.

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Prionsykdommen CWD er en sykdom i gruppen overførbare (transmissible) spongiforme encefalopatier (TSE), som forårsaker ødeleggelse av hjernevev med dødelig utfall hos pattedyr.

2023

A total of 14,218 samples of wild, semi-domesticated and captive Norwegian cervids were analysed in 2023. Of these, one moose (Alces alces) tested positive for CWD. The case was a 20 years old female killed in Lierne municipality, Trøndelag County.
The case detected had disease characteristics as described for the species in previous reports, i.e. PrPSc were only detected in brain tissue, and no prions were detected in lymphoid tissues with diagnostic tests. In the Nordic countries CWD have shown sporadic appearance in moose and red deer, whilst in reindeer the disease has been contagious and with lymphoid detections in routine diagnostics.
In addition, 22 wild muskoxen (Ovibos moschatus) from the Dovrefjell Mountains were tested and found negative for TSE.

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Jørn Våge

Seniorforsker vilthelse, skrantesyke/CWD-koordinator
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